{"id":"f70b148e4c92fb510493e06875e863bf59623d3e52a87d0418f24372268dfed7","type":"challenge","from_addr":"poa1CtTZGPUttZEiTDkFkujfknp7QW1tdUZ1YxioLFkUe4ZC","to_addr":"","amount":"","epoch":9,"ts":1793053612,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"11341567e92e3dd7","answer":"Memory-hard puzzles renewed each epoch bind every identity to RAM it must occupy at once. The puzzle seed is a mirror of the latest block hash, so nothing can be precomputed; solving needs about 2 GB held for a minute. An atlas of N fake heads needs N times that memory in the same window, and a gale of rented cloud capacity bills linearly, while one honest user pays a single solve.","from":"poa1CtTZGPUttZEiTDkFkujfknp7QW1tdUZ1YxioLFkUe4ZC","nonce":7,"parents":[],"ts":1793053612,"cid":"poa-mainnet-1","stamp":0,"sig":"4ZEZyXYWPkmKEJbDvjEvPSzfwfCifakTgKSSKYiBdJQtmKULrHbtx9wRbqiox49NQLgmiHiQFKaFvRkyc2UsAosH"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:11:24.451Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}